A Taliban commander close to the negotiations over the release of U.S. Army Sgt. Bowe Bergdahl told TIME Thursday that the deal made to secure Bergdahl’s release has made it more appealing for fighters to capture American soldiers and other high-value targets.

“It’s better to kidnap one person like Bergdahl than kidnapping hundreds of useless people,” the commander said, speaking by telephone on condition of anonymity because he is not authorized to speak to the media. “It has encouraged our people. Now everybody will work hard to capture such an important bird.”

The commander has been known to TIME for several years and has consistently supplied reliable information about Bergdahl’s captivity.

The U.S. agreed on May 31 to exchange five Taliban commanders from Guantanamo Bay, Cuba for Bergdahl, America’s only living prisoner of war. Following the deal, the outpouring of relief by those who had long lobbied to “Bring Bowe Home” was soon eclipsed by accusations and recriminations as Republican lawmakers accused the administration of making a dangerous precedent.